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JULIUS H. KROEHL, 0F NEW YORK, N. Y.

MACHINE FOR FORMING FLANGES 0N WROUGHT-IRON BEAMS.

Specification of Letters Patent No..12,133, dated January 2, 1855.

T0 all whom, t may concern.'

Be it known that I, JULIUs VI-I. KROEHL, of the city, county, and Stateof'New York, have invented a new and useful Improvement in Machinery forForming Taper or Elliptic Flanges on .VVrought-Iron Beams; and I dohereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the accompanyingdrawings, orming part of this specification, in whichw Figure l, is aside elevation of a machine constructed according to my invention.' Fig.2, is a vertical section of the same, taken at right angles to Fig. 1,through the center of the machine, but Lshowing the working partsentire. Fig. 3, is a side view of the rollers. Fig. 4.-, is a horizontalsection of the machine, in the line y, of Fig. l. Fig. 5, is a faceview, representing in black outline, the formv of the plate from whichthe beams are to be formed. Fig. 6, is an edge view of the same. Fig. 7,is a view of the flanged side of a finished beam. Fig. 8, is alongitudinal section of the same.

Similar letters of reference indicate corresponding parts in the severalfigures.

This invention consists in forming taper or elliptic flanges onwrought-iron beams by means of a pair of verticalv and a pair ofhorizontal rollers all havingtheir axes in the same plane and beingconstructed and operating in the manner hereinafter described.

To enable those skilled in the art, to make and use my invention, I willproceed to describe particularly its construction and operation.

A, A, are the standards, which, united by transverse stays, 64,105, formthe framing of the machine.

B, B, are the horizontal rollers, whose journals are fitted to boxes, b,b, sliding ver t-rically within the standards, and having screws, (Z, d,applied for the purpose of regulating the distance between the rollers.The lower roller, B, has its face parallel with its axis, and of a widthequal to the intended width or depth of the the beam including theflanges. The upper roller, B1, has its face of a width equal to theintended width or depth of the beam, minus the flanges, and may, or maynot, have its edges rounded, and its sides slightly beveled off towardthem as represented in Fig. 2. These rollers are similarly arranged tothe rollers commonly employed -in rolling iron, and may be gearedtogether in a similar manner.

C, C, are the vertical rollers which are supported 'in boxes, D, D,fitted to slide vertically in guides in the st-andards, A, A. Each box,D, contains the bearings for the upper and lower ournals, c, 0, of itsroller,

C, and receives the roller in a recess between the said bearings, so as'to prevent the roller moving in the direction of its axis. Therollers,C, C, have each a face, z', which should bewider than thegreatest width ever required for the flange of the beam, and above thisface a flange, e.

The face, i, is in contact, or nearly in contact with the sides or endsof the lower horizontal roller, B, and vthe flange, e, is in contact, ornearly in contact with the corresponding parts of the upper horizontalroller, B. vThe boxes, D, D, are connected at j, see Fig. '1, with twostrong levers ofthe second order, E, E, which work on fulcrum pins, f,f, secured in thef outside of the standards. These levers are furnishedat the voppositeend to thefulcrum with studs, g, g, which enter intoeccentric grooves inthe faces of the two cams, F, F,

upon the shaft, G, which works in suitable bearings on the standards,parallel with the shafts of the rollers, B, B, and receives `mo tionthrough a belt or gearing from the shaft of B. One of these grooves isshown in dotted lines at L, L, in Fig. l. The revolution of the cams hasthe effect of elevating and depressing the boxes, D, D, and the rollers,C, C. The grooves are 'of such form,

and the cams are driven at such speed relatively to the speedl of therollers, that the rollers, C, C, will have such a motion as is necessaryfor their flanges to give the desired form to the edges of the flangesofthe beam.

The operation of the machine is as follows. I will suppose that the formof the beam is desired to besimilar to that shown in Figs. 7, and 8,consisting of a flat plate of the beam'. It is conducted in a heat-edstate between the rollers, and as it is drawn along by the revolution ofthe rollers, B, and B', which have power applied to them for thepurpose, it gives motion to the rollers, C, C, by its contact with them,and, by the last named rollers, has its flanges bent upward, over thesides of the roller, B. When the end, Z, of iron, is first introduced tothe rollers,"the flanges, e, e, of the rollers, C, C, are in contact, ornearly so, with the roller, B, but the movements given by the cams, F,F, to the levers, E, E, are such as to cause the rollers, C, C, toascend at a` regular speed proportionate to the motion of the ironbetween the rollers, until the point, c, arrives opposite the axes, whenthey commence to descend and continue descending at a regular speeduntil the beam leaves the rollers entirely. By the regular ascent of therollers, C, C, a regular incline, Z, c, is produced on the flange.lVhile they remain stationary, the straight part, k, c, is produced, andwhile they descend, another incline, c, Z, is produced.

By varying the form of the grooves in the cams, F, F, and properlyregulating the velocity of their revolution, an almost indefinitevariety of forms maybe given to the flanges of the beams. The rollers,B, B, are adjusted for beams of different thicknesses in the same way asthe rollers of an ordinary rolling machine. The rollers, C, C,

should also be adjustable laterally to the machine to regulate thethickness Vof the flanges.V As a rude means of adjustment, I `haverepresented screws, m, m, bearing upon the journals of the latterrollers, but a bet-` ter arrangement would be to make the bearings forthe journals in small boxes adjustable by screws within the main boxes,D, D.

The principal advantage which this machine possesses over machines incommon use for rolling iron beams, is, that beams of any length, withflanges of tapering elliptic, or other irregular form, can be rolledwithout making thediameter of any of the rollers larger than thosecommonly employed. If two rollers fonly are used, a beam such as I haverepresented, must be produced by one single revolution; and if the beamwere of great length, the rollers would require to be immense. A But inthis machine, the rollers, B, B', need not be larger than the rollersmost commonly employed. The rollers, C, C, will be much smaller.

I do not claim the employment for forming or reducing metal bars of twopairs of rollers arranged as described when the side rollers, C, C, haveno flanges or no movement in the line of their axes, or any of therollers are otherwise construct-ed than as herein described. But

What I claim as my invention and desire to secure by Letters Patent, is-

The combination of the wide and narrow rollers, B, B, and the iangedrollers, C, C, which have a movement in the line of their aXescorresponding with the desired form of the edges of the flanges on thebeam for the purpose of finishing or smoothing the said edgessubstantially as herein set forth.

JULIUS H. KROEHL. llitnesses O. D. MUNN, JN0. W. I-IAMiL'roN.

